An Ethiopian cloud forest protects some of the last wild arabica plants.

Massive stele returned to Ethiopia after 70 years in Rome.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

The hottest place on the planet.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

This Annapolis home was built by one of the signers of the Declaration of Independence.

The oldest military monument in the United States.

Go inside to really appreciate this 500-year-old technological masterpiece.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

An award-winning children’s garden enchants visitors at the intersection of natural beauty and fairy tales.

This 17th-century place of worship still celebrates holidays in the traditional Swedish fashion.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Three hundred years of preserved Spanish colonial history in San Antonio.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

Now home to a drinking establishment, this building has a macabre history.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This curious, round temple is the oldest still-standing marble building in Rome.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.